Brake-shoe.



PATENTED FEB. 21, 1905.

SSHBETS-SHEET 1.

W. P. TAYLOR.

BRAKE SH APPLICATION FILED '7, 1904.

W. Pi TTTTTT B R A K E S H 0 Bl sssssssssssss z.

k M H I g S I $2 mm A ,h.

No. 783,087; PATENTED FEB. 21, 1905.

' W. P. TAYLOR.

' BRAKE SHOE.

APPLICATION FILED NOV. 17, 1904.

3 SHEETS-SHEET 3.

Fig. 11.

Witnesses." tnventor.

Attormy.

No. 783,087. I

'UNITED STATES Patented February 21, 1905.

WILLIAM PERRY TAYLOR, OF BUFFALO, NEW YORK.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 783,087, dated.February 21, 1905.

Application filed November 17, 1904. Serial No. 233,102i

frictionally contact with the wheel-surface,

and particularly to shoes constructed in one piece.

I homogeneous reinforced shoe.

reinforced shoe. I The principalobject of the invention is tostrengthenthecast body'of the shoe throughare entirely surrounded andrigidlygripped throughout on all sides by the contraction of One of thespecific features of the invention has reference to one or morestrengthening-rods which extend longitudinally through the castshoe-body near the outer surface or back thereof, but entirely beneaththe surface, being completely surrounded and gripped by the cast metalof theshoe-body throughout their length.

Another feature consists in roughening the surface, of the rods, so thatit will be more rigidly and strongly held in the cast body,

thereby forminga more intimate alliance between the two metals of theshoe-body and rods and prod ucing a practically homogeneous out by rodsor other reinforcing means, which the shoe-body'in cooling.

Other features and advantages and objects will behereinafter describedand perhaps v claimed, reference being bad to'the accompanying drawingsand the following descrip- Figure 1 is a longitudinal section throughthe brake-shoe on line a a, Fig. 7 Fig. 2 is a detached view of one ofthe strengtheningrods. Fig. 3 is a longitudinal section through thebrake-shoe on line b b, Fig. 1, the strengthening-rods being shown infull. Fig. 1 is a longitudinal section through the brake-shoe on line 00, Fig. 9, showing another form of strengthening-rod. Fig. 5 is adetached view of the other form of strengthening-rod. Fig. 6 is alongitudinal section through'the brakeshoe on line (ZtLFig. 4. Fig. 7 isan end elevation of the brake-shoe shown in Figswl and 3. Fig. 8 is atransverse section through the brake-shoe on line 6 6, Fig. 1. Fig; 9 isa section through the brake-shoeon line ff, Fig. 4. Fig. 10 is a sectionthrough the brakeshoe on line g g, Fig. 4.- Fig. 11 is adetachedend.view of the form of strengthening-rod shown in Figs. 4, 5, and 6.Fig. 12 is a transverse section through the strengthening-rod on line ith, Fig. 5.

In referring to the drawings for the details of construction likenumerals designate like parts.

The principal disadvantage with brakeshoes which are provided withreinforced backs is that the reinforcing-plate is not secured orfastened firmly enough to the shoebody to hold a portion brokentherefrom from detaching itself and falling.

' In my improved construction I use one or more rods, preferably two,instead of a plate around which the metal of the shoe-body is castcomplete at one operation and in one piece, so as to entirely surroundthe rods, which are firmly gripped continuously throughout their lengthwithin the body by the contracting of the. metal in cooling.

In the. adaptation shown in Figs. 1, 2', 3, 7, and 8 two rods 1 are usedwhich are curved to the curvature of a brake-shoe body 2 and extendlongitudinally throughout the shoebody from end to end thereof, beingembedded and completely surrounded 'by the cast metal of the said body2. To still further increase the securing of the rods in the cast body,they may be roughened, as shown at 3, thereby providing on theperipheries of the rods a tion of the cast bodyupon the rods anchoringnumber of minute recesses,into which the cast them so rigidly in placeand producing such metal will extend, and a number of minuteprojections, which will embed themselves in 1 the surrounding portionsof the cast body and produce an interlocking of the contacting surfacesof the rods and castbrake-body.

The rods 1 preferably are two in number and extend parallel to eachother, each extending throughout one of the upper corners of thebrake-shoe body, and are preferably of circular or equivalent shape incross-section.

In order to produce a more perfect alliance between the surface of therods and the surrounding surface of the cast body, the rods are firstheated before being placed in the mold and the molten metal pouredaround them after theyare placed in their proper position.

In cooling the cast metal contracts and grips the rods continuouslythroughout their length upon all sides, thus forming a most intimatecontact between the two metals and practically producing a .homogeneousreinforced brake-shoe.

In the adaptation shown in Figs. 4:, 5,6, 9, 10, 11, and 12 the ends ofthe rods are joined to form a loop 41:, which is entirely within thecast-metal body and has its ends 5 bent at an angle and extended intothe end abutments 6 of the brakeshoe body to reinforce and strengthensaid abutments' and also more' securely anchor theloop in place. Thesurface of the loop 4 may be roughened; as shown at 7, if desired.

The term reinforcing-rod is used in the specification to differentiatefrom the reinforcing-plates previously used in the art and which werenearly as broad as the body of the brakeshoe itself, and it is to beunderstood that by the said expression reinforcing-rod ,I mean anelement either formed of one single piece throughout or formed of aplurality of mutually-connected pieces which are comparatively narrow inwidth relatively to the brakeshoe body, whereby no broad surface ispresented to the molten cast metal, so that the opposed surfaces of thetwo metals are in intimate contact and practically joined throughout.

The great advantage of this improved shoe is therigid fastening andgripping of the rods within the cast-metal body, which prodii'ces astronger and better-wearing shoe that is less liable to break underabnormal stress and which will wear closer than the ordinary shoe, theshoe being good practically until worn down to expose the rods.

By casting the metalbody complete in one piece and entirely around therods, which are preferably of wrought-iron or steel, a brakeshoeisproduced which is for all essential purposes practically homogeneous,the contracan intimate contact between the surfaces that it may befairly said that they unite and form' practically a solid reinforcedone-piece brake- .shoe.

It will be noted that in this improvedshoe the rods or otherreinforcing. meansare unsupported except by the metal of the body, whichis cast complete in one piece and entirely surrounds the reinforcingmeanson all sides throughout.

I claim as my invention* 1. A solid homogeneous reinforced brakeshoecomprising a metal body cast complete in one piece and a rod extendingthrough said body and grippedthroughout on all sides by thecontractionof the cast body in-cooling.

2. A solid homogeneous reinforced bralreshoe' comprising a metal bodycast complete in one piece and a rod extending longitudinally throughoutand. entirely beneath the surface of said body and gripped throughout onall sides by the contraction of the cast body in cooling. I I 3. Abrake-shoe comprising a metal body cast complete in one piece and aroughened surface rod extending through said body and gripped on allsides by the contraction of the cast body in cooling.

4. A solid homogeneousreinforced brakeshoe comprising. a metal body castcomplete in one piece and a reinforcing means, including at least inpart two parallel rods extending longitudinally through the oppositeupper corners of the cast body and entirely beneath the surface of andsurrounded and gripped on all sides throughout by the contraction of thecast metal of said body in cooling.

5. A brake-shoe comprising .a metal body 'cast complete in one piece anda reinforcing means, including at least in part two parallel roughenedsurface rods extending longitudinally through the opposite'upper cornersof the cast body and entirely beneath the surface of (and surrounded bythe cast metal of said he y. v

6. In asolid homogeneous reinforced brakeshoe, a reinforcing meansincluding at least in part a rod, anda body cast complete in one 'pieceentirely around and-gripping said rod throughout ,on all sides.

7. A brake-slice comprising a body cast complete in one piece withareinforcing-rod therein entirely surrounded and gripped throughout bythe contractionof the metal of said body in cooling, whereby the opposedsurfaces of the metal body and the reinforcing element are in contactcontinuously throughout and practically unite to form a solidhomogeneous reinforced shoe, substantially as set forth.

8. Abralre-shoe comprisinga body castconiplete in one piece with areinforcing element therein; said element being comparatively solidhomogeneous reinforced shoe, snhstannarrow in width and entirelysurrounded and tially as set forth. gripped throughout by thecontraction of the metal of said bodyin cooling, whereby the op-'WILLIAM PERRY TAYLOR posed surfaces of themetal body and the re-Witnesses: v inforcing element are in contact continuously A. J.SANGSTER,

throughout and practically unite to form a Geo. A. NEUBAUER.

